25.JDBC
发表日期:2022-08-05 16:42:10 | 来源: | | 浏览(651) 分类:JAVA基础
MySqlDemo01
import java.sql.*; class MySql { private String sql; private ResultSet result = null; private Connection conn = null; private PreparedStatement pstmt = null; private static String MM_myDb_DRIVER = "org.gjt.mm.mysql.Driver"; private static String MM_myDb_USERNAME = "root"; private static String MM_myDb_PASSWORD = "123456"; private static String MM_myDb_STRING = "jdbc:mysql://localhost:3306/my_blog"; public ResultSet run(String sql) { try { Class.forName(MM_myDb_DRIVER); conn = DriverManager.getConnection(MM_myDb_STRING, MM_myDb_USERNAME, MM_myDb_PASSWORD); this.sql = sql; pstmt = conn.prepareStatement(sql); result = pstmt.executeQuery(); } catch (Exception e) { closeDb(); } return result; } public void closeDb() { try { result.close(); pstmt.close(); conn.close(); } catch (Exception e) { } } } public class MySqlDemo01 { public static void main(String args[]) { MySql ms = new MySql(); ResultSet result = ms.run("SELECT id,title FROM content"); try { while (result.next()) { System.out.println("编号:" + result.getString(1) + "----------------" + "标题:" + result.getString(2) + "<br/>"); } } catch (Exception e) { } finally { ms.closeDb(); } } }
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